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Wu X, Pan J, Yu JJ, Kang J, Hou S, Cheng M, Xu L, Gong L, Li Y. DiDang decoction improves mitochondrial function and lipid metabolism via the HIF-1 signaling pathway to treat atherosclerosis and hyperlipidemia. JOURNAL OF ETHNOPHARMACOLOGY 2023; 308:116289. [PMID: 36822344 DOI: 10.1016/j.jep.2023.116289] [Citation(s) in RCA: 12] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/14/2022] [Revised: 01/28/2023] [Accepted: 02/15/2023] [Indexed: 06/18/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE DiDang Decoction (DDD) is a traditional classical prescription that has been used to treat atherosclerosis (AS) and hyperlipidemia (HLP) in China. Nevertheless, the underlying mechanism of DDD remains unclear. AIM OF THE STUDY To validate the mechanism of DDD in AS and HLP based on network pharmacology and in vitro experiments. MATERIALS AND METHODS The chemical components of DDD were obtained from the Traditional Chinese Medicine System Pharmacology Database and Analysis Platform (TCMSP) database and literature mining, and the disease targets of AS and HLP were obtained from the Gencards, OMIM, and DisGeNET databases. The intersection genes were imported into the STRING database to construct protein-protein interaction (PPI) network, and the DAVID database was used for gene ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway enrichment analysis. Combined with the results of KEGG pathway analysis, the HIF-1 signaling pathway was selected for further in vitro experiments. RESULTS The results showed that network pharmacology predicted 112 targets related to DDD treatment of AS and HLP, and the top 10 related pathways are: Lipid and atherosclerosis, AGE-RAGE signaling pathway in diabetic complications, Chemical carcinogenesis - receptor activation, Pathways in cancer, Proteoglycans in cancer, Fluid shear stress and atherosclerosis, HIF-1 signaling pathway, Alcoholic liver disease, PPAR signaling pathway, and Coronavirus disease-COVID-19. In vitro experiments showed that DDD effectively reduced lipid accumulation in FFA-treated L02 cells; DDD attenuated mitochondrial damage and reduced ROS content; DDD inhibited ferroptosis and apoptosis; DDD up-regulated the expression of HIF-1α, Glutathione Peroxidase 4(GPX4), and Bcl2 proteins, and down-regulated expression of Bax protein. CONCLUSION DDD exerts therapeutic effects on AS and HLP through multiple targets and pathways, and improves mitochondrial function, reduces ROS content, inhibits ferroptosis and apoptosis by activating the HIF-1 signaling pathway, which provides reliable theoretical and experimental support for DDD treatment of AS and HLP.
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Affiliation(s)
- Xize Wu
- Liaoning University of Traditional Chinese Medicine, Shenyang, 110032, China.
| | - Jiaxiang Pan
- The Affiliated Hospital of Liaoning University of Traditional Chinese Medicine, Shenyang, 110032, China.
| | - Jj Jiajia Yu
- Liaoning University of Traditional Chinese Medicine, Shenyang, 110032, China.
| | - Jian Kang
- Liaoning University of Traditional Chinese Medicine, Shenyang, 110032, China.
| | - Siyi Hou
- The Affiliated Hospital of Liaoning University of Traditional Chinese Medicine, Shenyang, 110032, China; Liaoning Provincial Key Laboratory of TCM Geriatric Cardio-Cerebrovascular Diseases, Shenyang, 110032, China.
| | - Meijia Cheng
- The Affiliated Hospital of Liaoning University of Traditional Chinese Medicine, Shenyang, 110032, China.
| | - Lili Xu
- Department of Cardiology, 924 Hospital of Joint Logistic Support Force of PLA, Guilin, 541002, China.
| | - Lihong Gong
- The Affiliated Hospital of Liaoning University of Traditional Chinese Medicine, Shenyang, 110032, China; Liaoning Provincial Key Laboratory of TCM Geriatric Cardio-Cerebrovascular Diseases, Shenyang, 110032, China.
| | - Yue Li
- The Affiliated Hospital of Liaoning University of Traditional Chinese Medicine, Shenyang, 110032, China; Liaoning Provincial Key Laboratory of TCM Geriatric Cardio-Cerebrovascular Diseases, Shenyang, 110032, China.
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DiNicolantonio JJ, O'Keefe JH. Importance of maintaining a low omega-6/omega-3 ratio for reducing inflammation. Open Heart 2018; 5:e000946. [PMID: 30564378 PMCID: PMC6269634 DOI: 10.1136/openhrt-2018-000946] [Citation(s) in RCA: 87] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 11/15/2018] [Indexed: 01/11/2023] Open
Affiliation(s)
| | - James H O'Keefe
- Saint Luke's Mid America Heart Institute, Kansas, Missouri, USA
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DiNicolantonio JJ, O'Keefe JH. Omega-6 vegetable oils as a driver of coronary heart disease: the oxidized linoleic acid hypothesis. Open Heart 2018; 5:e000898. [PMID: 30364556 PMCID: PMC6196963 DOI: 10.1136/openhrt-2018-000898] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 08/22/2018] [Indexed: 12/31/2022] Open
Affiliation(s)
- James J DiNicolantonio
- Department of Preventive Cardiology, Saint Luke's Mid America Heart Institute, Kansas City, Missouri, USA
| | - James H O'Keefe
- Department of Preventive Cardiology, Saint Luke's Mid America Heart Institute, Kansas City, Missouri, USA
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Marchix J, Choque B, Kouba M, Fautrel A, Catheline D, Legrand P. Excessive dietary linoleic acid induces proinflammatory markers in rats. J Nutr Biochem 2015; 26:1434-41. [PMID: 26337666 DOI: 10.1016/j.jnutbio.2015.07.010] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2015] [Revised: 07/06/2015] [Accepted: 07/16/2015] [Indexed: 12/19/2022]
Abstract
Following the historical dietary recommendations, the substitution of polyunsaturated fatty acids (PUFAs) for saturated fatty acids (SFAs) resulted in a dramatic increase of linoleic acid (LA) in the Western diet. While proatherogenic properties of SFAs have been described, the involvement of LA on the inflammatory process remains controversial. Herein, we evaluated the effects of an excessive LA intake on the cytokine-induced expression of endothelial adhesion molecules vascular cell adhesion molecule-1 (VCAM-1) and intercellular cell adhesion molecule-1 (ICAM-1), through the nuclear factor (NF)-κB pathway, in comparison with a control diet and regarding a "positive" SFA diet. Wistar rats were fed experimental diets - a control diet or diets enriched with LA or SFA - for 11 weeks. Plasma lipid parameters and proinflammatory cytokine production such as interleukin-1β and tumor necrosis factor (TNF)-α were analyzed. Expression of endothelial adhesion molecules and NF-κB was determined by immunohistochemical analysis. No difference was observed in body weight. The enriched diets did not affect triglyceride and total cholesterol levels in plasma. Our results demonstrated that excessive dietary LA intake increased TNF-α levels (P<.05) in plasma. Rats fed the LA-enriched diet showed a significantly higher expression of VCAM-1, ICAM-1 and NF-κB in aortas. In addition, our results demonstrated that an excess of LA is more efficient to activate endothelial molecular process than an excess of SFA. The present study provides further support for the proinflammatory properties of LA and suggests an LA-derivatives pathway involved in the inflammatory process.
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Affiliation(s)
- Justine Marchix
- Laboratoire de Biochimie et Nutrition Humaine, INRA USC 2012, Agrocampus Ouest, Rennes, France
| | - Benjamin Choque
- Laboratoire de Biochimie et Nutrition Humaine, INRA USC 2012, Agrocampus Ouest, Rennes, France
| | - Maryline Kouba
- Laboratoire de Biochimie et Nutrition Humaine, INRA USC 2012, Agrocampus Ouest, Rennes, France
| | - Alain Fautrel
- INSERM U620, IFR 120 Core histopathology platform, University of Rennes 1, Rennes, France
| | - Daniel Catheline
- Laboratoire de Biochimie et Nutrition Humaine, INRA USC 2012, Agrocampus Ouest, Rennes, France
| | - Philippe Legrand
- Laboratoire de Biochimie et Nutrition Humaine, INRA USC 2012, Agrocampus Ouest, Rennes, France.
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5
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Jung CH, Lee WJ, Hwang JY, Seol SM, Kim YM, Lee YL, Ahn JH, Park JY. The role of Rho/Rho-kinase pathway in the expression of ICAM-1 by linoleic acid in human aortic endothelial cells. Inflammation 2012; 35:1041-8. [PMID: 22124782 DOI: 10.1007/s10753-011-9409-2] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
Abstract
Linoleic acid (LA), a dietary unsaturated fatty acid, has been known to increase the expression of adhesion molecules such as intercellular adhesion molecule-1 (ICAM-1) through the activation of nuclear factor-kappa B. Rho/Rho-kinase (ROCK) pathway mediates various cellular functions related to cardiovascular disease and affects the expression of ICAM-1. However, the exact mechanism underlying this action has not been fully elucidated. In this study, we aimed to find out the role of Rho/ROCK pathway in LA-induced ICAM-1 expression in human aortic endothelial cells (HAECs). We found that LA increased ICAM-1 expression and phosphorylation of ROCK and MYPT-1, a distal signal of ROCK. Y-27632, a ROCK inhibitor, suppressed ICAM-1 expression and phosphorylation of MYPT-1 induced by LA. The effect of LA on the increased phosphorylation of MYPT1 and expression of ICAM-1 was abolished by knocking down RhoA and ROCK2 protein level expression using small interfering RNA. LA increased NF-κB DNA-binding activity, which was inhibited with pretreatment with Y-27632. This study suggests that Rho/ROCK pathway plays a role in LA-induced ICAM-1 expression, which is possibly mediated by NF-κB in HAECs.
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Affiliation(s)
- Chang Hee Jung
- Department of Internal Medicine, University of Ulsan College of Medicine, Poongnap-dong, Songpa-gu, Seoul 138-736, Republic of Korea
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Rodriguez-Leyva D, Malik A, Tappia PS. Gender-related gene expression in response to dietary fatty acids and predisposition to atherosclerosis and cardiovascular disease. ACTA ACUST UNITED AC 2011. [DOI: 10.2217/clp.11.62] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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Jung CH, Lee WJ, Hwang JY, Seol SM, Kim YM, Lee YL, Park JY. Vaspin protects vascular endothelial cells against free fatty acid-induced apoptosis through a phosphatidylinositol 3-kinase/Akt pathway. Biochem Biophys Res Commun 2011; 413:264-9. [PMID: 21893030 DOI: 10.1016/j.bbrc.2011.08.083] [Citation(s) in RCA: 67] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2011] [Accepted: 08/17/2011] [Indexed: 10/17/2022]
Abstract
Vaspin, an adipocytokine recently identified in a rat model of type 2 diabetes, has been suggested to have an insulin-sensitizing effect. However, the exact mechanism underlying this action has not been fully elucidated. Furthermore, the specific function of vaspin is largely unknown, especially in vascular cells. We examined whether vaspin affects the insulin-signaling pathway in cultured endothelial cells and is capable of preventing free fatty acid (FFA)-induced apoptosis in endothelial cells through its insulin sensitizing effect, specifically, through its stimulatory effect on PI3-kinase/Akt signaling pathways. Vaspin significantly increased Akt phosphorylation and prevented the impairment of Akt phosphorylation by linoleic acid (LA) in insulin-stimulated endothelial cells, which effects were abolished by pretreatment with the PI3-kinase inhibitor, Wortmannin. Moreover, pretreatment with vaspin prevented LA-induced apoptosis in insulin-stimulated endothelial cells; this anti-apoptotic effect of vaspin was also eliminated by pretreatment with Wortmannin. The present study indicates that vaspin protects vascular endothelial cells from FFA-induced apoptosis through upregulation of the PI3-kinase/Akt signaling pathway. Our study is the first to demonstrate that vascular cells can be targets of vaspin. Our results further suggest that vaspin could have beneficial effects on the atherosclerosis.
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Affiliation(s)
- Chang Hee Jung
- Department of Internal Medicine, University of Ulsan College of Medicine, Seoul, Republic of Korea
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8
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Co-existence of fatty acids changes in aorta artery and adipose tissue; comparison between CAD and non CAD patients. J Thromb Thrombolysis 2008; 27:185-90. [PMID: 18246409 DOI: 10.1007/s11239-008-0198-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/18/2007] [Accepted: 01/15/2008] [Indexed: 10/22/2022]
Abstract
BACKGROUND This study was aimed to evaluate composition and possible co-existence of change in fatty acids of aorta artery and adipose tissue in two groups of patients with different degree of atherosclerosis. METHODS Twenty-one angiographically documented coronary artery diseases (CAD) patients, and the same numbers of age, sex and body mass index-matched angiographically documented non CAD patients enrolled in this study. They were operated electively for coronary artery bypass grafting (CABG) or aortic valve replacement surgery (AVR), respectively. Small segments of ascending aorta artery and adipose tissue were dissected form the two groups during open heart surgery and subjected to fatty acid analysis. RESULTS The results showed that in the CAD group, amounts of saturated and omega6 unsaturated fatty acids were higher, while the percent of monounsaturated and omega3 unsaturated fatty acids were lower than the non CAD patients for both aorta artery and adipose tissue samples. A moderate correlation was seen between amounts of fatty acids in adipose tissue and aorta artery. CONCLUSION As there are many reports which show that adipose tissue can only be used as a suitable indicator of dietary intake of exogenous fatty acids (e.g. polyunsaturated and trans fatty acids), our study suggests that modification of fatty acids with endogenous synthesis and metabolism (e.g. saturated and monounsaturated fatty acids) which were observed in both adipose tissue and aorta artery of CAD patients, may be produced during atherogenesis.
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9
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Sunder‐Plassmann R. Cytochrome P450: Another Player in the Myocardial Infarction Game? Adv Clin Chem 2007. [DOI: 10.1016/s0065-2423(06)43008-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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10
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Bahrami G, Ghanbarian E, Masoumi M, Rahimi Z, Rezwan Madani F. Comparison of fatty acid profiles of aorta and internal mammary arteries in patients with coronary artery disease. Clin Chim Acta 2006; 370:143-6. [PMID: 16563364 DOI: 10.1016/j.cca.2006.02.014] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2005] [Revised: 02/03/2006] [Accepted: 02/03/2006] [Indexed: 11/17/2022]
Abstract
BACKGROUND Atherosclerosis represents the principal cause of death in the many societies. Since few data have been published about the composition of fatty acids in atherosclerotic arteries such as the aorta comparing to the non affected internal mammary artery which is used for aortocoronary bypass grafting, we compared the fatty acid profiles of atherosclerotic aorta and internal mammary arteries in human individuals. METHODS Twenty-one angiographically documented coronary artery disease (CAD) patients who were admitted to the open heart surgery division enrolled in this study. They were operated electively for coronary artery bypass grafting surgery (CABG). Small segments of ascending aorta and internal mammary arteries were sampled during open heart surgery. The samples were subjected to lipid extraction and fatty acid analysis by high performance liquid chromatography. RESULTS The results showed that different fatty acid profiles were seen in the aorta and internal mammary arteries. The atherosclerotic aorta contained lower amounts of unsaturated fatty acids (including trans isomer of oleic acid) and higher proportions of saturated fats comparing to the internal mammary. In the aorta also, the amounts of omega6 series of fatty acids were more and levels of omega3 fats were less than the internal mammary. CONCLUSION This study suggests that modification of fatty acids may play a role during atherogenesis.
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Affiliation(s)
- Gholamreza Bahrami
- Medical Biology Research Center, Medical School, Kermanshah University of Medical Sciences, Kermanshah, Iran.
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11
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Rodríguez-Lee M, Ostergren-Lundén G, Wallin B, Moses J, Bondjers G, Camejo G. Fatty Acids Cause Alterations of Human Arterial Smooth Muscle Cell Proteoglycans That Increase the Affinity for Low-Density Lipoprotein. Arterioscler Thromb Vasc Biol 2006; 26:130-5. [PMID: 16239593 DOI: 10.1161/01.atv.0000191659.94059.62] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Objective—
The dyslipidemia of insulin resistance, with high levels of albumin-bound fatty acids, is a strong cardiovascular disease risk. Human arterial smooth muscle cell (hASMC) matrix proteoglycans (PGs) contribute to the retention of apoB lipoproteins in the intima, a possible key step in atherogenesis. We investigated the effects of high NEFA levels on the PGs secreted by hASMCs and whether these effects might alter the PG affinity for low-density lipoprotein.
Methods and Results—
hASMC exposed for 72 hours to high concentrations (800 μmol/L) of linoleate (LO) or palmitate upregulated the core protein mRNAs of the major PGs, as measured by quantitative PCR. Insulin (1 nmol/L) and the PPARγ agonist rosiglitazone (10 μmol/L) blocked these effects. In addition, high LO increased the mRNA levels of enzymes required for glycosaminoglycan (GAG) synthesis. Exposure to NEFA increased the chondroitin sulfate:heparan sulfate ratio and the negative charge of the PGs. Because of these changes, the GAGs secreted by LO-treated cells had a higher affinity for human low-density lipoprotein than GAGs from control cells. Insulin and rosiglitazone inhibited this increase in affinity.
Conclusions—
The response of hASMC to NEFA could induce extracellular matrix alterations favoring apoB lipoprotein deposition and atherogenesis.
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MESH Headings
- Arteries/cytology
- Atherosclerosis/metabolism
- Cells, Cultured
- Chondroitin Sulfate Proteoglycans/genetics
- Chondroitin Sulfate Proteoglycans/metabolism
- Dyslipidemias/metabolism
- Glycosyltransferases/metabolism
- Humans
- Hypoglycemic Agents/pharmacology
- Insulin/pharmacology
- Lectins, C-Type/genetics
- Lectins, C-Type/metabolism
- Linoleic Acid/pharmacology
- Lipoproteins, LDL/metabolism
- Muscle, Smooth, Vascular/cytology
- Muscle, Smooth, Vascular/drug effects
- Muscle, Smooth, Vascular/metabolism
- Palmitates/pharmacology
- Proteoglycans/genetics
- Proteoglycans/metabolism
- RNA, Messenger/metabolism
- Sulfates/metabolism
- Sulfotransferases/metabolism
- Triglycerides/metabolism
- Versicans
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Affiliation(s)
- Mariam Rodríguez-Lee
- Wallenberg Laboratory for Cardiovascular Research, Sahlgrenska Academy at Göteborg University, 413 45 Gothenburg, Sweden
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Maingrette F, Renier G. Linoleic acid increases lectin-like oxidized LDL receptor-1 (LOX-1) expression in human aortic endothelial cells. Diabetes 2005; 54:1506-13. [PMID: 15855339 DOI: 10.2337/diabetes.54.5.1506] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Results from in vitro studies suggest that selected fatty acids, and especially linoleic acid (LA), can elicit endothelial dysfunction (ED). Because LA is increased in all LDL subfractions in patients with type 2 diabetes, this alteration may contribute to ED associated with diabetes. Lectin-like oxidized LDL receptor-1 (LOX-1) is the major endothelial receptor for oxidized LDL (oxLDL), and uptake of oxLDL through LOX-1 induces ED. To evaluate whether LA may contribute to the upregulation of endothelial LOX-1 in diabetes, we studied the effect of LA on LOX-1 expression in cultured human aortic endothelial cells (HAECs). Treatment of HAECs with LA increased, in a time- and dose-dependent manner, endothelial LOX-1 protein expression. Pretreatment of HAECs with antioxidants and inhibitors of NADPH oxidase, protein kinase C (PKC), and nuclear factor-kappaB (NF-kappaB) inhibited the stimulatory effect of LA on LOX-1 protein expression. Furthermore, in LA-treated HAECs, increased expression of classic PKC isoforms was observed. LA also led to a significant increase in LOX-1 gene expression and enhanced the binding of nuclear proteins extracted from HAECs to the NF-kappaB regulatory element of the LOX-1 gene promoter. Finally, LA enhanced, through LOX-1, oxLDL uptake by endothelial cells. Overall, these results demonstrate that LA enhances endothelial LOX-1 expression through oxidative stress-sensitive and PKC-dependent pathways. This effect seems to be exerted at the transcriptional level and to involve the activation of NF-kappaB. Upregulation of LOX-1 by LA may contribute to ED associated with type 2 diabetes.
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Affiliation(s)
- Fritz Maingrette
- Department of Nutrition, University of Montreal, Notre-Dame Hospital, CHUM Research Centre, 3rd Floor, Y-3622, 1560 Sherbrooke East, Montreal, Quebec, Canada, H2L 4M1
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Toborek M, Lee YW, Kaiser S, Hennig B. Measurement of inflammatory properties of fatty acids in human endothelial cells. Methods Enzymol 2002; 352:198-219. [PMID: 12125348 DOI: 10.1016/s0076-6879(02)52020-6] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Affiliation(s)
- Michal Toborek
- Department of Surgery, Division of Neurosurgery, University of Kentucky Medical Center, Lexington, Kentucky 40536, USA
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15
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Woo Lee Y, Joo Park H, Hennig B, Toborek M. Linoleic acid induces MCP-1 gene expression in human microvascular endothelial cells through an oxidative mechanism. J Nutr Biochem 2001; 12:648-654. [PMID: 12031258 DOI: 10.1016/s0955-2863(01)00186-3] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
Linoleic acid is a dietary fatty acid that appears to play an important role in activation of the vascular endothelium under a variety of pathological conditions, including development of atherosclerosis or cancer metastasis. Evidence indicates that inflammatory responses may be an underlying cause of endothelial cell pathology induced by linoleic acid. However, the profile of inflammatory mediators and the potential mechanisms involved in inflammatory reactions stimulated by the exposure to linoleic acid are not fully understood. The present study focused on the mechanisms of linoleic acid-induced expression of monocyte chemoattractant protein-1 (MCP-1) gene in human microvascular endothelial cells (HMEC-1). Treatment of HMEC-1 with increasing doses of linoleic acid markedly activated an oxidative stress-responsive transcription factor, nuclear factor-kappaB (NF-kappaB). In addition, exposure to linoleic acid induced a time- and concentration-dependent overexpression of the MCP-1 gene. Increased MCP-1 mRNA levels were observed in HMEC-1 treated with linoleic acid at doses as low as 10 &mgr;M. Linoleic acid-induced overexpression of the MCP-1 gene was associated with a significant elevation of MCP-1 protein levels. Most importantly, preexposure of HMEC-1 to antioxidants, such as pyrrolidine dithiocarbamate (PDTC) or N-acetylcysteine (NAC), attenuated linoleic acid-induced MCP-1 mRNA expression. The obtained results indicate that linoleic acid triggers MCP-1 gene expression in human microvascular endothelial cells through oxidative stress/redox-related mechanisms.
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Affiliation(s)
- Yong Woo Lee
- Department of Surgery, Division of Neurosurgery, University of Kentucky Medical Center, 800 Rose Street, 40536, Lexington, KY, USA
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16
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Park HJ, Lee YW, Hennig B, Toborek M. Linoleic Acid-Induced VCAM-1 Expression in Human Microvascular Endothelial Cells Is Mediated by the NF-κβ-Dependent Pathway. Nutr Cancer 2001. [DOI: 10.1207/s15327914nc41-1&2_18] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
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